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The law is used in ray tracing to compute the angles of incidence or refraction, and in experimental optics to find the refractive index. In this experiment we can determine the bending of light rays owing to the change in refractive index and hence verifying the law.
The objectives of this experiment are as follows: To measure the angles of incidence and refraction at a boundary between media. To observe total internal reflection at a boundary between media. To calculate the critical angle of a boundary between media.
Lab 10: Snell’s Law and Refraction. • Gain understanding about the behavior of light as it passes from one medium to another. • Compare least time travel to the rules of refraction. • Use Snell’s Law to calculate the index of refraction of water and compare it to 1.33.
In this experiment you aim a beam of light so that it moves through one transparent medium into another. When light passes from one material into another its direction of travel generally changes. This bending process is called refraction. The amount of bending depends on the properties of the media.
The objective of this experiment is to use Snell's law to determine the index of refraction of a glass plate. We will be measuring the angles of incidence and refraction and substituting into Snell's law to solve for the index of refraction of glass. In addition, we will be measuring various lengths in order to demonstrate the utility of the sine
Snell’s Law provides the relation between the angles of incidence and of refraction: n 1 sin(θ 1 )= n 2 sin(θ 2 ) where n 1 and n 2 are the indexes of the refraction of the two materials light travel through.
We learned that the angle of incidence is equal to the angle of reflection and the angles do not depend on the nature of the material. In refraction we will learn that the angle of the ray when transmitted through the material changes and depends on the speed of light in the two materials.
